Cutting insert



FIG. 1 is a perspective view from above of a cutting insert showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof; and,

FIG. 4 is a side view thereof, which is identical from all sides.

The broken line showings of FIGS. 1-3 are included for the purposes of illustrating portions of the cutting insert and form no part of the claimed design. 

The ornamental design for a cutting insert, as shown and described. 